Vibration system for measuring anti-vibration performance of optical assembly

Abstract

The utility model relates to the technical field of optics, and discloses a vibration system for measuring the vibration resistance of an optical component, so as to assist in optimizing a coupling structure between components and further ensure the stability of an optical path system. The system comprises a connecting frame connected with at least three discrete foot cups; the optical bread board is connected with the vibration motor; the elastic assemblies are used for limiting and buffering displacement of the optical bread board in the three-axis direction, and the elastic assemblies are arranged between the connecting frame and the bread board and arranged above the corresponding foot cups.

Description

Technical Field

[0001] The utility model relates to the technical field of optics, in particular to a vibration system for measuring the vibration resistance performance of an optical component. Background Art

[0002] During use, optical components are usually deployed on optical platforms to prevent them from being affected by environmental vibrations. However, in the construction of certain optical paths, the vibration source is around the optical components, causing them to be affected by vibrations. In this context, it is of great significance to conduct vibration resistance tests on optical components.

[0003] However, in a high-precision optical system, slight changes in any optical component in the optical path due to the optical component itself and / or external factors may lead to many adverse consequences such as the need to recalibrate the system parameters. Therefore, by pre-testing the vibration resistance of optical components on a vibration table, the impact of optical components in a vibration environment can be predicted, thereby optimizing the coupling structure between components and ensuring the stability of the optical path system. Utility Model Content

[0004] The utility model aims to disclose a vibration system for measuring the vibration resistance of optical components, so as to assist in optimizing the coupling structure between components and thus ensure the stability of the optical path system.

[0005] To achieve the above-mentioned purpose, the vibration system for measuring the vibration resistance of optical components disclosed in the utility model comprises:

[0006] A connecting frame connected to at least three separate foot cups;

[0007] Optical breadboard connected to the vibration motor;

[0008] At least three elastic components are used to limit and buffer the displacement of the optical breadboard in three-axis directions, and each of the elastic components is deployed between the connecting frame and the breadboard and is separately located above the corresponding foot cup.

[0009] Preferably, the elastic component comprises:

[0010] An auxiliary bracket pair connected to the connecting frame, the auxiliary bracket pair comprising a first auxiliary bracket in the X-axis direction and a second auxiliary bracket in the Y-axis direction;

[0011] An upper end of the first auxiliary bracket and an upper end of the second auxiliary bracket are each provided with an elastic auxiliary block in contact with the optical breadboard;

[0012] A first elastic connecting member connected to the connecting frame;

[0013] A second elastic connector connected to the breadboard;

[0014] An elastic member is connected between the first elastic connecting member and the second elastic connecting member, and the elastic member has six degrees of freedom of movement and rotation around XYZ.

[0015] Preferably, the elastic member is a spring embedded in the sleeve of the first elastic connecting member and the sleeve of the second elastic connecting member.

[0016] Preferably, the foot cup is an adjustable foot cup whose height is adjusted by rotation.

[0017] Preferably, a vibration isolation pad is provided at the bottom of the adjustable foot cup.

[0018] The utility model has the following beneficial effects:

[0019] 1. The overall structure is simple and practical, which can assist in optimizing the coupling structure between components, thereby ensuring the stability of the optical path system.

[0020] 2. The frequency and power of the vibration motor determine the vibration frequency and amplitude of the optical component under test on the breadboard. It can be reasonably configured according to the needs of the user and has good flexibility and controllability.

[0021] The present invention will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0023] Figure 1 It is a schematic structural diagram of a vibration system for measuring the vibration resistance of an optical component disclosed in an embodiment of the utility model. DETAILED DESCRIPTION

[0024] The embodiments of the present invention are described in detail below with reference to the accompanying drawings. However, the present invention can be implemented in many different ways as defined and covered by the claims.

[0025] Example 1

[0026] This embodiment discloses a vibration system for measuring the vibration resistance of an optical component. Figure 1 As shown, it comprises: an adjustable foot cup (1), a connecting frame (2), an auxiliary bracket (3), an elastic auxiliary block (4), a first elastic connecting member (5), an elastic member (6), a second elastic connecting member (7), an optical breadboard (8), and a vibration motor (9).

[0027] The adjustable foot cup (1) and the connecting frame (2) are connected via threaded holes. The bottom of the adjustable foot cup (1) is provided with a vibration isolation pad, which is mainly used to reduce the vibration transmitted to the ground by the vibration system. The height of the vibration system can be adjusted around by rotating the adjustable foot cup (1) to ensure that the entire vibration system is flat.

[0028] The connecting frame (2) fixes the auxiliary bracket (3) by screws, and the auxiliary bracket (3) is connected with an elastic auxiliary block (4). By tightening or loosening the screws between the connecting frame (2) and the auxiliary bracket (3), the amplitude of the vibration platform in the X-axis direction and the Y-axis direction can be limited. Two adjacent auxiliary brackets (3) at the corners of the breadboard constitute an auxiliary bracket pair.

[0029] exist Figure 1 In the embodiment, the number of adjustable foot cups (1) is 4. As a variation, a surface can be determined based on three points. In other application scenarios, the number of adjustable foot cups (1) can be 3 or more.

[0030] The connecting frame (2) is connected to the first elastic connecting member (5) by screws, and the second elastic connecting member (7) and the optical breadboard (8) are connected by screws. An elastic member (6) is provided between the first elastic connecting member (5) and the second elastic connecting member (7). The elastic member has six degrees of freedom, that is, it can move and rotate around XYZ. The purpose is to ensure that the vibration platform can be excited to vibrate in all directions. Optionally, the elastic member (6) is a spring embedded in the sleeve of the first elastic connecting member (5) and the sleeve of the second elastic connecting member (7).

[0031] The vibration motor (9) is connected to the optical breadboard (8) via screws. The vibration motor (9) can adjust the vibration frequency and the vibration force. When the vibration motor (9) is turned on, the displacement of the entire optical breadboard (8) in the XYZ directions is stimulated.

[0032] Based on this embodiment Figure 1 The structure shown in the figure has the following operation flow in actual application:

[0033] First, place the level in the middle of the optical breadboard and adjust the height of the adjustable foot cup to make the entire vibration system level. Then install the object to be vibrated on the optical breadboard and set the vibration frequency and vibration force of the vibration motor according to the test conditions.

[0034] After the vibration motor is turned on, the vibration amplitude of the optical breadboard in the XYZ direction is measured by a handheld vibrometer to see whether it meets the test conditions. If the test conditions are not met, the vibration force of the vibration motor is adjusted if the amplitude in the Z direction is not reached, and the screws between the connecting frame (2) and the auxiliary bracket (3) are tightened or loosened if the amplitude in the XY direction is not reached.

[0035] based on Figure 1 , those skilled in the art can obviously conclude that the vibration system for measuring the vibration resistance of optical components disclosed in this embodiment includes: a connecting frame connected to at least three discrete foot cups; an optical breadboard connected to a vibration motor; at least three elastic components for limiting and buffering the displacement of the optical breadboard in three-axis directions, each of which is deployed between the connecting frame and the breadboard and is separated above the corresponding foot cup. Further, the elastic component includes: an auxiliary bracket pair connected to the connecting frame, the auxiliary bracket pair includes a first auxiliary bracket in the X-axis direction and a second auxiliary bracket in the Y-axis direction; the upper end of the first auxiliary bracket and the upper end of the second auxiliary bracket are each provided with an elastic auxiliary block in contact with the optical breadboard; a first elastic connector connected to the connecting frame; a second elastic connector connected to the breadboard; and an elastic member connected between the first elastic connector and the second elastic connector, and the elastic member has six degrees of freedom of movement and rotation around XYZ. Preferably, the elastic member is a spring embedded in the sleeve of the first elastic connector and the sleeve of the second elastic connector.

[0036] In summary, the vibration system for measuring the vibration resistance of an optical component disclosed in this embodiment has at least the following beneficial effects:

[0037] 1. The overall structure is simple and practical, which can assist in optimizing the coupling structure between components, thereby ensuring the stability of the optical path system.

[0038] 2. The frequency and power of the vibration motor determine the vibration frequency and amplitude of the optical component under test on the breadboard. It can be reasonably configured according to the needs of the user and has good flexibility and controllability.

[0039] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A vibration system for measuring the vibration resistance of an optical component, characterized in that: include: A connecting frame connected to at least three separate foot cups; Optical breadboard connected to the vibration motor; At least three elastic components are used to limit and buffer the displacement of the optical breadboard in three-axis directions, and each of the elastic components is deployed between the connecting frame and the breadboard and is separately located above the corresponding foot cup.

2. The vibration system for measuring the vibration resistance of an optical component according to claim 1, characterized in that: The elastic component comprises: An auxiliary bracket pair connected to the connecting frame, the auxiliary bracket pair comprising a first auxiliary bracket in the X-axis direction and a second auxiliary bracket in the Y-axis direction; An upper end of the first auxiliary bracket and an upper end of the second auxiliary bracket are each provided with an elastic auxiliary block in contact with the optical breadboard; A first elastic connecting member connected to the connecting frame; A second elastic connector connected to the breadboard; An elastic member is connected between the first elastic connecting member and the second elastic connecting member, and the elastic member has six degrees of freedom of movement and rotation around XYZ.

3. The vibration system for measuring the vibration resistance of an optical component according to claim 2, characterized in that: The elastic member is a spring embedded in the sleeve of the first elastic connecting member and the sleeve of the second elastic connecting member.

4. The vibration system for measuring the vibration resistance of an optical component according to claim 1, 2 or 3, characterized in that: The foot cup is an adjustable foot cup whose height can be adjusted by rotation.

5. The vibration system for measuring the vibration resistance of an optical component according to claim 4, characterized in that: A vibration isolation pad is provided at the bottom of the adjustable foot cup.

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